weiss



Sept. 25 1923. 1,469,061

j v ATTOR/VE nmlulc Sept. 25, 1923.

1,469,061 C. W. WEISS TRANSMISSION DEVICE Filed Jan. 6. 1923 2 Sheets-Sheet 2 INVENTO/ Patented. 25,. lZ,

UNITED STATES PA'EEN? ENCE.

CARL W. WEISS, 0F BROOKLYN, NBFT TRANSIYIISSION DEVICE.

borough of Brooklyn oit the city of Neiv TiTorlnin the State of New York, have invented certain new and useful Improve ments in Transmission Devices` of which the following .is a specification, reference beingr had to the accompanying drawings7 forming a part hereof.

This invention relates to transmission deL vices ot the Igeneral character oit that shown in Letters Patent of the United States No. 1,146,982, dated July Q0 1915, in which power transmitted through a nutatingr body which receives a movement ot rotation on its own axis proportional to the angular displacement ot the axis et rotation with respect to the axis of nutation. the speed ratio being' varied by varying such angle of displacement.. Provision Was made in the device as shown in said patent for compensating' for the unbalanced action ot the link connecting the driving member with the mutor by counteriveighting the link, but it has been found in practice, when the device is operated at high speech that there is unbalance.. action of the nutatinn; body or mutor itself and it is the purpose of the present invention to over-come such 1unbalanced action. To this end there are provided, betiveen the driving member and the driven member7 'tivo nutating bodies or mutors which are disposed in opposition to eagch other; as regards their respective movements of nutation, so that the device7 when the parts are properly desi gned, is perfectly balanced under all conditions; in other Words the arrangement is such that any movement ot one which tends to produce an unbalancing effect in the transmission is compensate-d for by a movement of the other which Will have an equal and opposed or neutralizing unbalaneing ellect7 the net result beiner the maintenance of the mechanism in perfect balance. The invention will be explained' more fully hereinafter with reference to the accompanying. drawings in which it is illustrated and in Which- Figure l is a view partly in longitudinal central section and partly in elevation of one form of transmission device Which embodies the present improvement.

Figures 2, 3 and 4 are respectively views in transverse section on the planes indicated by the broken lines .2"2, 3-3 and 4 4; of

in the positi iii the axes i A. spring` el, f'ctine is; and a sleeve nut j", tends non 'n voeain ous' heus k "o move the shaft o toiva d the right nre l.

housing supports at 7L, the internally spherical bearing me ibcr,y described in said patent, and has at .723 shearing; for the driven member m. l

Disposed within the internally spherical bearing member ,71, and concentric thereivitln are the tivo nutatinnY bodies or mutors z' and each et which #functions in snbstantiallv the saine manner as the initatinp; body or inutor describ "l in said patent The niutor has an axial stud t2 encircled by a. Z3 which is pivotally coni'iected, at ci a forked link y, the latte being` pivetallv connected. as at g, with the head ot the shaft (t. The nutating body or imiter 1 has an internally giioi'ivei'l collar .in about an aperture which encircles and is large enough to permit the movement oii the link y as hereinafter described, collar being conH centric with the axis of the inutor i. lilithin the groove of the col.- 11 is received freely an anniilus 7112, also et such eiameter as to permit the :tree movement oi the links g and also of links g2 which are pivoted at 13 on the anniilns and at g on the head of the shaft a. l't Will be noted that the parts are so constructed and operatively related that the tivo inutors may be brought into axial alignment, the axis of alignment in he form of apparatus shown Vcoinciding with the axis ot the driving member and the driven member. lt will also be noted that the connections are so proportioned and disposed that the angular displacement of the tivo mutors/ the shaft a and transverse pivotal axis g are moved toward or from the center of the spherical bearingsurtace h, shall be always equal and opposj,

l i ivita The mutor vf carries rolling gripping `members le which cooperate with the internally spherical bearing` surface 7i, as described in said patent while the miitor carries rollinggripping` members 7; which cooperate in the saine manner with the internally spherical bearing surface il@ oi the midor 2". l

As a means YFor cominunicatini,Y the movement otroiutionro't the miitor e' to the driven member in. themutor is shown as having an internally spherical bearingrsurllace for co-operation with rolling grippinginembers 71:2 carried liv the driven member m as descril: d in said patent. i

' The mode of oinierat on oi the improved transmission device is the same as that ot the transmission device described in said patent, the inner oi the tivo iiiutors iso-operati ing` with t ie outer inutor in the saine manner as the outer co-operates Twith the stationarv bearing surface It, the resultant movement of rotation of the inner mutor being communicated. to the driven member as already described, ltwvill be understood that, in the operation et the apparatus shown, il there is no pressure on the operating,r lever c the spring al will retain the driving;` shaft a in its extreme right hand posit'on and the tWoi miitors iii their respective neutral positions, Vwith their axes in alignment- Vhen, however, pressure is applied to the operating lever, the driving shaft e will be moved to the right and, through the res )ective linlis f/ and gli the tivo mutois will be displaced angularly inopposite directions and to an equal extent so that, in the movements of nutation,

the .tivo mutors Yand their connected parts 2. A transnissioii device comprising a.

driven member, tiro cooperating, oppositely disposed, concentric miitors, means to impart to both mutors movement of nutation in op-V position. and means to impart the movement ot' rotation of the inner mutor to the driven niemliier. f y

3. A transmission device comprising a dr'vcn member, tivo (1o-operating, oppositely disposed` concentric inutors, a concentric sililierical bearing,v surface. 'for co-opei'ation with one oft said miiters, means to impart to both iiiutois movement oil nutation in opposition, and means to impart the movement of rotation oit the other oit said mutors to the driven member.

4t. A transmission devce Comprisingdriven member, tivo co-oi'ierating, oppositely disposed mutors, a drivin@ member, links connectiiifi the driving' member to the mutors en V in opposition, and means to impart thenioveinent ot rota-tion ofthe mut-ors to the" dri 'von member.

driven ireinber, 'tivo co-onerating'` oppositely disposed. concentric miitors, a driving shaft, Y

links con necting,lr the driving shaft to the mutors in opposition, one ot said iniitors havinc` an opening to neririt the passage and movement of the l'nk connection of the other mutor. and means to impart the movement ot rotation ofthe inner miitor to the driven member. A i

G. A transmission device comprising a driving member and a driven member, means comprising` two cooperating miitois,r ttor traiisinittino; rotation from the drivingrto the driven member, each miitoi being' movable into nositions Where independently of the other it would tend to imbalance the an,- iiaratiis during rotation, andmeans for shifting' said mutors one with respect to the other so that the iiiibalancing action of one Will tend to neutralize the unbalancing action of the other.

Y This speciicationI signed this 19th day of December, A.. D. 1922. 

